|Review by HGAlfrerd||posted 04-19-2017 01:13 PM||1147 views||0 times favorited||24 comments|
This incident is about “False advertising” and “using 1 HP inverter on a 1 ½ HP Motor” on the Grizzly G0632 wood lathe”.
09-30-14 I ordered a wood lathe (G0632) including various wood working accessories.
Once the lathe arrived and I had it assembled, I noticed that the inverter would cut-out frequently when operating the lathe. I called Grizzly and they shipped a replacement inverter. There was an issue with the first shipment of the inverter, as someone had picked the wrong item and instead of the inverter, I received an iron rod. Nevertheless, the second shipment contained the actual inverter.
Unfortunately the inverter was a Delta VFD 007S21A, which is listed as a 1 HP inverter and has a maximum output current of 4.2 A listed on the label. The Grizzly G0632 lathe on the other hand is running a 1 ½ HP motor which draws 4.7 A.
I then called Grizzly technical support and complained that the inverter, which they had shipped, was not appropriately sized for the G0632 lathe. Vince at Grizzly technical support then wrote back that: “What we were informed is that “Under-rating of VFD’s is a fairly common practice.” In another e-mail he then expanded: “The sizing of a VFD is determined by the amperage generated. The VFD that originally shipped on the lathe, and that you received for a replacement, is properly rated for the amperage generated, although it states 1HP. This has been confirmed by our engineer and Quality Control department.” And last not least, he even sent me (e-mail 12-04-14) an incorrect spec-sheet for the inverter, which listed a current rating of 5A for the VFD 007 inverter. The tag on the inverter, which I received as well as the current spec-sheets for the Delta VFD inverters show 4.2 A as the maximum current.
I find it very disturbing that a “technical expert” at Grizzly would make such a mistake and in the end still insist that the 1 HP inverter is sufficient for the 1 ½ HP motor.
Moreover the initial spec-sheet for the G0632 lathe had a 2 HP inverter listed on their own web-site (copy can be provided). After my current complaint, the web-site has been changed.
I understand that for many people a 1 HP lathe is more than sufficient, but I don’t accept that I purchase a 1 ½ HP lathe and specifically check for a sufficiently sized inverter, only to end up with an undersized inverter, which is now prone to break down rather sooner than later, leaving me with a substantial expense for a possible replacement part. By the way, I was told that the 1 HP inverter would cost between $700 and 800 when purchased from Grizzly, which is about 50% of the cost of the lathe. I am not looking forward to these kinds of very costly repairs only to end up with another undersized inverter, which probably is going to last only for a short time as well.
I have tried very hard to convince Vince at Grizzly technical support that they should honor their initial description of the inverter and send me the 2 HP version of the Delta VFD. That one is only slightly larger in its physical dimensions, but I would be happy to make the necessary accommodations for that as it is only a very thin sheet-metal box, covering the inverter, which needs to be changed. However, despite numerous e-mails I was unable to get this result and I now have to file the official complaint through BBB. Hopefully this step will convince the management at Grizzly to provide a better support for their customers in the future.
I see three possible solutions:
1. Send me the correctly sized (2 HP) inverter and assist me with possible programming of the inverter to make it work with the G0632 lathe.
I would also expect that Grizzly compensates me with a decent voucher (e.g. 15 % discount on any future purchase) for the trouble I had until now.
2. Grizzly makes a significant price deduction (somewhere close to the $700 or $800, which Grizzly charges for the replacement inverter) on my original purchase price and I will send back the old as well as the replacement inverter. I will then purchase the correctly sized inverter directly from Delta and only expect from Grizzly possibly help in case the inverter needs any special programming.
3. This is the least favorable option, but in case none of the previous solutions can be worked out, I insist on returning the entire purchase, which I placed 09-30-14 (order # 90113574). Grizzly would have to send sufficient packaging material, since I did not keep all of the original packaging and a suitable pick-up date/time would have to be arranged. Ideally Grizzly should send someone here to pick up all of the items.
Needless to say, but Grizzly did not provide the appropriate inverter and the lathe was returned.